AHI Carrier Catalog | Page 505

AIR-TO-WATER HEAT PUMP WITH INTEGRATED HYDRONIC MODULE  30RQM/30RQP 160-520 Features and advantages ■■ Greenspeed® variable-speed pump to reduce pumping energy use up to 2/3 (option recommended by Carrier): -- Elimination of the energy losses caused by the water flow control valve by the electronic setting of the nominal water flow -- Energy savings during stand-by periods or part-load operation by automatic water pump speed reduction. Pump motor energy use varies as the cube of the speed so that only 40% speed reduction can reduce energy consumption by 80% -- Improved unit part-load performance (Increased SCOP and SEER values with variable water flow following EN14825). Refer to hydronic option chapter for more information. ■■ Extra energy savings through partial heat recovery option that permits free hot water production. ■■ Reduced maintenance costs -- Fast diagnosis of possible incidents and their history via the control -- R-410A refrigerant is easier to use than other refrigerant blends. CONTROLS AIR TREATMENT ■■ High unit full and part load energy efficiency and efficient design of the water side: -- Standardised Eurovent values in accordance with EN 14511-3:2013 EER up to 2.9 and ESEER up to 4.35 (30RQP version) -- 30RQP and 30RQM ranges are compliant with EU Eco-design Tier 1 Minimum Efficiency Performance Standards (MEPS) in heating that apply from September 2015 -- 30RQP range and 30RQM sizes 430-470-520 are compliant with EU Eco-design Tier 2 MEPS in heating that apply from September 2017 -- Multiple scroll compressors equipped with a high-efficiency motor that permit exact matching of the capacity to the load -- Electronic expansion device permitting operation at a lower condensing pressure and improved utilisation of the evaporator heat exchange surface (superheat control) -- Air heat exchanger with Greenspeed® variable speed fans (30RQP version) -- Low pressure drop brazed plate heat exchangers (pressure drops < 45 kPa at Eurovent conditions). ■■ Specific control functions to reduce unit energy use during occupied and unoccupied periods: -- Internal time schedules clock: Permits heat pump on/off control and operation at a second set point -- Automatic water set-point offset based on outside air temperature or room air temperature via an option -- Floating high-pressure management -- Variable-speed fan control -- Cooling and heating demand limitation. Refer to control chapter for more information. HEATING Very economical operation C A R R I E R 2 0 1 6 / 2 0 1 7 505